Cottpijna-gatrging- machine



April 30, 1929. R. scHoLz j Co-UPLING GAUGING MACHINE 2 Sheets-sheetFiled April 5. 1928 @CA/AED Sch/Oz. Z,

Patented Apr.v 30, 1929.

UNITED STATES PATENT OFFICE.

SCHOLZ, 0F LORAIN, OHIO, ASSGNOR T0 NATIONAL TUBE COMPANY, A CORPORATION0F NEW JERSEY. I

ooUPLmG-GAUGING mamita' Application led April 5,

This inventionrelates to coupling gauging machines and, while notlimited thereto, relates more particularly to double-ended gaug- -inmachines so constructed that one coupling may be threaded onto one endof the gauge-shaft while one is being removed from the other-endthereof, whereby asingle machine will serve two operators.

One object is to provide a novel form of control for the machineoperable by a reciprocatory movement of the gauge-shaft which 1s underthe control of the operator.

Another object is to provide a machine of this class having the novelcombinatlon, construction and design of parts, hereinafter described andillustrated in the accompanying drawings.

In the drawings- Figure 1 is a side elevation of a gauging machineconstructed in accordance with this invention.

Figure 2 is an end elevation thereof.

Figure 3 is an enlarged fragmentary detail view showing the constructionof the gauginhead. 1

igure 4 is a similar view sectioned at the rear of the gauge-plug.

Referring more particularly to the drawings the numeral 2 designates themachine housing having a horizontal hollow gaugeshaft 3 journaledtherein adjacent its upper end. The shaft 3 is free to slidelongitudinally in its bearings for a purpose to be described.

A worm-wheel 4 is slidably keyed on the shaft 3 and is meshed with aworm 5 secured on a drive-shaft 6 journaled in the housing y 2 below theshaft 3. The shaft 6 has one end projected beyond the housing, and apulley 7 is secured on said projected end.

A motor 8 is mounted on the housing 2 and has its armature shaftprovided with a pulley 9. A belt 10 is trained over the pulleys 7 and 9so as to form a driving connection between the motor 8 and drive-shaft6.

A bolt-rod 12 extends through the hollow gauge-shaft 3 and projects fromeach end thereof and is held against movement relative to the shaft by aset-screw 14. Threaded gauge-plugs 13 are mounted on the ends of the rod12 and held in position by nuts 15.

A motor controller 16 is mounted in the housing 2, and has itsoperatingplunger 17 connected to the end of one of the arms 18 of abell-crank lever 19 which is pivotally 192s. serial 110.2673661).

mounted on the housing 2. The other arm 20 of thebell-crank leverterminates in a clevis or fork 21 which fits into a groove 22 in the4gauge-shaft, so that reciprocation or sliding movement of thegauge-shaft 3 will rock the lever 19 about its pivotal mounting andthereby cause' the arm 18 to actuate the motor controller 16. Thecontroller is of the ordinary type which normally remains in neutralposition and will return to neutral position immediately when theapplied force is removed from the operating plunger 17.

In operation, one operator will start a coupling on the right-handgauge-plug 13, and when the coupling is started the operator will pushon the coupling, thus pushing the shaft 3inwardly so as to cause thebell-crank lever 19 to be rocked and thus actuate the motor controller16 soas to start the motor 8. When the motor starts, the operator willcontinue to grasp the coupling until the coupling is screwedsuiiiciently tight on the plug to turn in the operators hand. When thecoupling turns in the operators hand he will release the coupling andthereby permit the controller to return to neutral position and stop themotor. The operator will then pull the gauged coupling toward him so asto slide the shaft 3 outwardly relative to the housing and thereby rockthe crank-lever in the reverse direction so as to actuate the motorcontroller in the reverse direction and cause a reverse operation of themotor to unthread the gauged coupling.

When two operators are engaged on the machine, the second operator willthread couplings on the second gauge-plug 13 while the first operator`is unthreading a coupling and the second operator willunthread'coupiings from the second gauge-plug while the first operatoris threading couplings on the first gauge-plug.

A bracket 25 is securedv on each end of the upper portion of the frame.The brackets 25 are provided with vertical slots 26 in which horizontalguide-rods 27 are adjustably mounted for vertical adjustment. Agaugeblock-28 is slidably mounted on each of the rods 27. The gaugeblock 28 is cut away, as at 28a, forming a shoulder 28b adapted toenga'ge the rear end of the gauge-plug 13.

After the coupling has been threaded on the gauge-plug 13, and while theplug is stationary prior to the motor being reversed, the operator willmove the\gaugeblock 28 up against the rear end of the coupling and ifthe coupling has been correctly threaded the shoulder 281 of the block28 will engage the rear end of the plug 13. Suitable tolerances areallowed and the operator will know by the position of the block 28relative to thev coupling and the rear end of the gauge-plug whether thecoupling threads are within these tolerances so as to gauge whether thecoupling has threaded sufficiently onto the plug.

`Whilev I have shown and described onespccific embodiment of myinvention, it Will be understood that I do not Wish tobe limited theretosince various modifications may bemade Without departing from the scopethercof as defined in the appended claims.

. I claim f 1. A coupling gauging machine for gauging screw-threadedcouplings, comprising a housing, a gauge-shaft journale'dA in said.

housing, a motor, means forming a driving.

connection between said inotorjandsaid shaft,

. said shaft being slidable relative to said vhousing and said means,and a motor control 'operablc by the sliding movement 'of lsaid shaftfor starting, stopping and reversing said motor.

0 2. A coupling gauging '.machine for gauging screw-threaded couplings,comprising a housing, a gauge-shaft Journaled in 'said housing, athreaded gauge-plug o n at least one end of said shaft, a motor, means'including a worm-wheel connected to said shaft and aworm in meshv withx'said Worm-Wheel for forming a driving connection between said motorand said shaft, said vshaft vbeingslidable relative to said housing-andsaid wormwheel, and a motor control operable byl the' sliding movementofsaid shaft for-starting, stopping and reversing said motor.

3. A coupling gauging machinel for gauging screw-threaded couplings,comprising a housing, a gauge-shaft journaled in said housing andslidable relative thereto, a threaded gauge-pluor a worm-wheel slidablykeyed'to said shaft, a

driveshaft journaled in said housing, a worm on said shaft and'meshedwith said wormvvgheel, a motor, means forming 'a driving connectionbetween said motor and said driveshaft, a motor control apparatusadapted to start, stop and reverse said motor, and means -ingscrew-threaded coupli.

on at least one end of said shaft,

on said shaft and ineshcd with said Wormwheeha motor, means forming adriving connection between said motor and said driveshaft, a. motorcontrol apparatus adapted to; start, stop and reverse said motor, albellcrank lever`l pivotally mounted on said housingand having one endconnected with said motor contrdl apparatus/and its other end engagedwith said gauge-shaft, said lever being-adapted to be rocked by saidshaft when said shaft is slidably moved relative' to said housingandsaid worm-Wheel and said rocking movement of said lever being adapted toactuate said motor control apparatus.

v 5. A cou linff Yau in machine for Gau'- h D l? s nig screw-threadedcouplings, comprising a housing, a gauge-shaft having a circumferentialgroove therearound y'and slidably journaled in said housing so. as Atobe capable of revolving and reciprocating relative thereto, a threadedgauge-plug secured on at least one end of said shaft, a Worm-Wheelslidably keyed on said shaft, a drive-shaft .journaled in said housing,a Worm on said drive-shaft and in mesh with said worm-wheel, a motor foroperating said drive-shaft, a control mechanism for starting, stoppingand reversing lsaid motor, a bell-crank lever pivotally mounted on saidhousing and having one'arm connected with and adapted to operate saidlcontrol mechanism when said bell-crank is rocked about its pivotalmounting, said bellcrank having its other arm terminating in a forkwhich is fitted in the circumferential groove in said gauge-shaft so asto cause said bell-crank to -be rocked about its pivotal mounting whensaid gauge-shaft is reciprocated.

In testimony whereof, I have hereunto signed my name.

RICHARD soHoLz.

